#ifndef __JIN_IO_LIB__
#define __JIN_IO_LIB__
int cp(char* source,char* destination);
int file_size(char* file_path);
int file_hole(char* file_path);
int cp_by_file_no(int s,int d);
void cat(int argc,char* argv[]);
int in_array(int v,int* arr,int length);
int set_fl(int fd,int flag);
int clear_fl(int fd);
#endif
